package xyz.jangle.string;

public class StringMain4 {

	public static void main(String[] args) {

		String a,b;
		a="123";
		b=null;
		System.out.println(a+b);	// 123null
		
		String c = "12"+"3";
		System.out.println(a==c);	// true
		
		String d = new String("123");
		System.out.println(a==d);	// false
		
		String e = new String("123");
		System.out.println(d == e);	// false
	}

}
